火箭加速度 的英文怎麼說
中文拼音 [huǒjiànjiāsùdù]
火箭加速度
英文
rocket acceleration-
Adding rocket propulsion could double this velocity ? and thus the impact momentum ? which would drive them to depths 75 percent greater in granite formations and nearly 1, 000 percent greater in soft soil
加裝火箭推進器可使速度（也包括沖擊動量）提高一倍，使炸彈鉆入花崗巖的深度增加75 % ，鉆入軟土壤的深度更可增加到10倍之多。Without this, it seems unlikely that anyone could hang on when a firebolt accelerates from zero to 150 mph in only ten seconds
沒有這些，看起來任何人在火弩箭十秒以內將速度從零加速到時速150英里卻還能騎在上面是不可思議的。Flying on a broomstick, particularly one which accelerates as quickly as the firebolt, must necessarily involve some form of magic protective field holding rider to broom and shielding against wind and inertial forces
乘坐一把飛天掃帚飛行，尤其是象火弩箭這樣有極高加速度的，就必須有某種魔法的保護性領域將乘坐者維持在掃帚上並針對大風和慣性力量進行防護。Mouse operation, seizing the big gray wolves, xu li left click to the appropriate degree loosened the left mouse button is still out big gray wolves., and other big gray wolves come to the moment the left mouse button by waving the big stick hit, in his flight by the left mouse button can also be used rocket accelerator, of course, you must find enough gasoline
鼠標操作，抓住大灰狼，按鼠標左鍵蓄力，到適當力度松開鼠標左鍵仍出大灰狼，等大灰狼落下的一瞬間按鼠標左鍵揮舞大棒擊打，在飛行途中按鼠標左鍵還可以使用火箭加速器，當然你要有足夠的汽油才行。Report back in the exhibit schedule : march 8, 2006 - 10 days am09 : march 10, 2006 - 12 days remove time : march 12, 2006 exhibitors range : car, car, motorcycle, light truck bearings, railway bearings, magnetic bearing spindle ; aviation aerospace marine bearings, rocket and satellite bearings ; industrial robot bearings, machining center and machine spindle bearings, textile machine bearings, motor bearings, and farm machinery bearings, paper machine bearings, bearings press, bearing mill, metallurgical mining, petrochemical machinery bearings, bearings sporting goods, marine rig bearing ; bearings, bearings gyroscope, high - precision bearings, high - speed bearings, linear motion bearings, needle roller bearings, thrust bearings, ultra - low - temperature bearings, special bearings, ceramic ball bearings, spherical with trophies bearing miniature bearings, quiet motor bearings, ball bearings, roller bearings, lubricating bearings corrosion resistant bearings, bearing joints ; bearing ring blank refinement, precision ball and roller crown, with nails cage
撤展時間： 2006年03月12日參展范圍：轎車汽車摩托車輕型車軸承鐵路軸承磁懸浮軸承電主軸航空航天航海軸承火箭及人造衛星軸承工業機器人軸承加工中心及機床主軸軸承紡織機軸承電機軸承農機軸承造紙機軸承印刷機軸承軋機軸承冶金礦山石油化工機械軸承體育用品軸承海洋鉆機軸承組合軸承陀螺儀軸承高精軸承高速軸承直線運動軸承滾針軸承推力軸承超低溫軸承特種專用軸承陶瓷球軸承帶座外球面軸承微型軸承靜音電機軸承球軸承滾子軸承潤滑軸承耐腐蝕軸承關節軸承軸承套圈精化毛坯精密鋼球凸度滾子帶釘保持架軸承滾動體等軸承部件。The influence of double - push accelerated velocity, spin - rate regularity and unfolding fins on air rocket dispersion and the mechanism of decreasing of air rocket dispersion are also studied respectively
分別研究了雙推力加速度，轉速規律和尾翼延時張開，對地面火箭彈和航空火箭彈散布的影響，以及減小航空火箭彈散布的機理。Using method of sumt and powell, the thesis carries out optimization design for air rocket with double - push accelerated velocity and spin - rate regularity, which dramatically decreases air rocket dispersion. in the end, some valuable conclusions are achieved for application
綜合利用雙推力加速度，轉速規律，同時採用內點罰函數法和powell共軛方向法，對航空火箭彈的主要參數進行優化設計，實現了大幅度減小航空火箭彈散布的目的，得到了一些有應用價值的結論。The experimental results indicates that the secondary mass flow increases with increasing of primary mass flow rate, but the bypass decrease because the primary mass flow rate increase more rapidly than secondary mass flow. the expansion configuration shows low thrust property due to low pressure in flow path. the secondary nozzle changes the pressure distribution in ejector combustor, and decreases bypass ratio, but obtain more completely mixing
結果表明：二次流流量隨著一次流流量的增加而增加，由於二次流流量的增加速度低於一次流，引射系數減小；在純擴張式結構實驗中，引射燃燒室壓強很低，難以實驗推力增強；二次噴管改變了引射燃燒室的壓強分佈，降低了引射系數，改善了混合狀況能；對于本文的實驗結構，存在一個最優的二次噴管出口面積，使引射火箭推力最大，同數值模擬結果相吻合。The multi - stage rocket will jettison its aft stages when fuel in these stages is exhausted. this reduces the weight of the rocket and increases its speed
多級火箭會把燃料用完的尾一級火箭依次分離丟掉，以減輕火箭的重量及增加速度。This paper is one part of the uestc ’ s assignment ? ? “ the design and research of mimu ” 。 by the research for mems and the mems acceleration sensor, this assignment will finish a series of mimu system, which will be applied to the rocket and the missile guided system. this thesis mainly include following facets : research the mature mems processing technic at the present, develop a type of capacitive acceleration sensor which structure is simple and based on a set of new silicon bulk micromachining process
本論文來自電子科技大學機械電子工程學院的課題「 mems慣性組合的設計與研究」 。該課題希望通過對mems技術和mems慣性傳感器的研究，研製和設計出一系列能夠應用於火箭和導彈制導的mimu系統。主要進行了一下工作:研究了目前較為成熟的mems加工工藝，提出了一種結構簡單，基於各向異性體硅微加工技術的電容式加速度傳感器。Moreover, the data processing method of accelerated life test is used to solve the problem of the reliability data conversion under different operating status to liquid rocket engine. and the counter power law model is introduced as the relation model between the characteristic life and the combustion chamber pressure, the accelerated life equation of the constant stress accelerated life test for the weibull distribution is obtained, through the accelerated life equation, the reliability estimate of different combustion chamber pressure is calculated
再次，採用加速壽命試驗的數據處理方法對液體火箭發動機不同工況下可靠性數據折算的問題進行了研究，引入逆冪律模型作為特徵壽命與燃燒室壓力之間的關系模型，得到了weibull分佈下恆定應力加速試驗的加速壽命方程，並通過加速壽命方程折算出不同室壓下的可靠度估計。It is shown that when the exit area of secondary nozzle and the fuel / oxidizer ratio is fixed, the increase of mass flow rate of secondary flow lead to the decrease of velocity of mixed flow, and increase of total mass flow rate. the synthetical result of these two phenomenon cause the increase of thrust of rocket ejector, but the increasing magnitude is relatively small, indicating that these is no necessary to claim large bypass ratio in rocket ejector design. in the comparison between two configurations, the typical one has better performance, indicating the importance of pressure ratio
結果表明：在固定二次噴管出口面積和氧燃比的條件下，二次流（引射空氣流）流量的增加引起混合氣體出口速度的下降和總流量的增加，二者綜合作用使發動機推力增加，但增幅不大，表明在設計發動機結構和工作參數時，不必過分追求大的引射系數；兩種結構的性能對比分析表明了增壓比對引射火箭性能的提高具有重要意義；對引射火箭的熱力循環分析同樣表明，增壓比對于提高發動機性能非常關鍵。The analysis is focused on the acceleration influence on burn rate of the grain when the solid rocket motor is working under lateral overload. the simple model of burn rate in acceleration field is established. moving laws of burn surface for two different grain type srms are respectively derived, on the base of which zero dimension and one dimension quasi - steady internal ballistic simulation models are established
分析了橫向過載對固體推進劑燃速的影響，建立了橫向加速度場中的簡化燃速模型，推導了兩種不同藥型的燃面退移規律，在此基礎上進行了零維、一維準定常內彈道計算與分析，建立了固體火箭發動機內流場三維兩相流模型。分享友人